Sewing machine



Patented Feb. 22, 1927.

n JOHN DONOVAN, OF LYNN, IVIASSACI-IUSEVTTS.

SEWING MACHINE.

Application sied november s, 1924. serial No. 747,416.

My invention relates to machine ornamentation, the process or method ofproducing the same, and the resulting product.

It has fork its objects, tov provide a new 5 and novel machine design adaptable to a Varying combination of colors,A simplified for quantity production, inexpensive to produce, and not requiring particular skill on'v the part of the operator; to extend the field Vof ornamental machine stitching; to enlarge the scope ofornamentation,` making it `commercially possible to uniformly decorate any series `of articles intended for use in combination for dressor otherV purposes; to provide a novel means of ornamentation produced with'simple equipment without necessity of expensive. machinery; to make possible' the substitution of machine ornamentation `for the hand method now commonly used; to provide an effective means of producing a varying machine ornamentation; to provide a new and -novel means of machine embroidery, using a series of needles optionally carryingthreads of different colors; to provide an eiiicientf means for cleaning the collet and insuring the uniform positioning of vneedles therein; to provide a means for the effective and artistic shading and blending of colors in varying ornamental machine design; to provide an artistic ornamentation without injury to, .or weakening of the material on which the design is placed; to provide an ornamentation artistic on both sides of the material on which it is placed; and to secure other advantages and results apparent from the following specification.

The process and mechanism by which I accomplish the objects of'my invention, involves the placing of specially designed attachments on an eyelet hole finishing machine, said attachments having additional thread carrying mechanism and needles which operate, ink conjunction with the thread carrying needle regularly on said machine, in zigzag motion about ascircular course. I vary the ornamentationby changing the distance between needles by shimming or otherwise, by color combinations produced by using threads of complementary shades, and by stopping the machine when full, three-quarter, half circles or other segments have been produced, such designs being placed at will where ornamentation is desired. No hole is punched in the material on which the ornamentation small needles used.

Referring to the accompanying drawings which form a. part of this specification, *igure l. is a view of the head portion of an eyelet hole finishing machine withmy attachment in place thereon. Figure 2 shows au end view thereof. Figure 3 shows an enlarged detail of my plural needle collet. Figure 4 shows the detail ofmy improved throat plate. Figure 5 shows the outer needles used with the collet. Figure 6 shows the inner or in between needles. Figures 7, 8, and 9 show varying styles of the ornamentations produced. n

Referring again to Figures l and 2,'A shows the position of the thread spoolsA from which the needles are fed. B shows the is placed, 'other than that produced by the'` thread leads, one for each strand used. CV

shows the thread tensions, one for each strand. D shows the Aauxiliary tension used in common by all the strands. E shows the take up lever provided with carrying holes for each strand. Fshows the ordinary collar positioned on the needle bar. Gr shows the collet. H shows the tightening screw on said collet. I, J., and K show the needles positioned in said collet. L shows the throat plate by which the plural needles are properly guided.' M' shows the threads in their proper position. Referring againto Figure 3, N shows an elongated, narrow, orifice in thecoilet G in which orifice fits the plurality of needles used. Collet Gis provided with a bevel seat at the bottom of the orice, as shown in Fig. 3, which is designed to insure the same relative position of each needle to the point of the sewing hook at the time the hook arrives at the needle. This is due .to the fact that the bevel seat enables certain `of the needles to be inserted in thecollet' further than the others with the result that,

v when the needles have all been properly positioned in the collet the eyes of the needles will be obliquely disposed with respect to the line of feed, as will be seen in Fig. l. As the needles come up the sewing hook moves to meet them and theV variation is needed to correspond with .the time of the hook. By the term sewing hook is meant the pointed portion of the shuttle, (not shown), which in the customary operation of the machine oscillates back and forth, engaging the thread in its forward movement, carrying it around the shuttle and thereby crossing the shuttle thread so as to form the i ordinary eyelet machine but it zag stitehin stiteh. N2 shows an opening through the body portion ofi the eoilet opposite the bot toni oi the oriliee N to insure easy Cleaning of the oritiee for aeeurate alineinent of the needles. N3 shows the holes through whieh the threads pass beitore respectively entering the eyes ot' the needles. l, J, and K show the needles in position in said orifice.

Referring again to Figure 5, T shows the flat inside suri'aee on the head of the outside needles I and K. In Figure (i, V shows the flat surface on both sides ot the inside needle J. The Hat surjtaees on Vthe inside needle and on the inside edges ot'- the outside needles are resorted to 'for the purpose ot more securely holding the needles in position when the tighteningserew is set up against theni. There may he a varied nuniber oit insi le needles used, whose Shanks are varied according to the space desired be tween the lines of thread. In the ordinary eyelet machine, the needle har linoves baek and forth from right to lett, and while the needle is raised iroin the ,doods the revolving` or rotary feed, in eonneetion with the tee-d disk, carries the goods in a eireular motion whieh describes the course in which the work moves. It is this circular motion, together with the vertical and laterai reeiproation oi the needle, that results in the nig'- The revolving;` presser ntoot and feed used with the present invention is in large part the saine as 'found on the is niodiied for the purpose of: the invention so as to utilize a multiplicity ot needles. l he pivot on the throat. plate oit the ordinary eyelet machine and about which the foods inove,

`is dispensed with in the present invention and the renioval of this pivot not only eliniinates punetures or holes in the goods but also prevents any crowding of the work or the retarding` of the progress ot the saine, suoli as would naturally result troin the presence of a pivot where the feed operates in a straight line with the :feed den' eontined in a straight channel eut in the throat plate. As previously explained, the present invention contemplates the use of a eireular feed, the goods and 'feed revolving simultaneously. The throat plate L is provided, as shown in Fig. Ll, with a narrow, elongated, slot R through which the multiple needles pass in the stitehing,T process, below and about which is an integral extension S eonneurale stituting a pilot designed to guide the needles and to insure proper alignment thereof relative to the hook ot the shuttle. Figures 8, 9, and l0 show ornanientations varied by stopping the operation ot the niaehine at diiierent segments in its eireular course.

Similar letters ot reterenee reier to similar parts throughout the 'arious views.

Thilo I have illustrated and described a preferred eonstil'uetion 'tor carrying my invention into etieet, this is capable ot variation or inodiiieation without departing from the spirit of the invention. I therefore do not wish to be limited to the exact details oi' construction herein set forth but desire to avail myself ot suoli variations and modi- I'ieations as come within the seope ot the appended elaiins.

Adjustment on the machine, render it possible to change the length ot the stitches and vary its frequency in a given space, thus providing for varying the sizes of theornamental designs produced.

Having thus described my invention I claim as new and desire to secure by Letters Patent of the United. States ot Aineriea:

l.. In a sewing niaehine, a needle bar, a eollet carried thereby and presenting an elongated narrow oritiee` adapted to aecomniodate a plurality of needles in side by side relation, said collet havingr a bevel seat adapted to position the needles with the needle eyes obliquely disposed with relation to the plane of the work position, and means :tor holding the said needles in position.

2. In a sewing machine, a needle bar` a collet earried thereby.v said eollet havinga narrow elongated orifiee provided with a bevel seat and having an opening through the body portion thereoitl opposite the bottom oit the oriiee, a plurality oi needles disposed in the said orifice in side by side relation and engaging the said bevel seat so as to be thereby positioned with the needle eyes obliquely disposed with relation to the plane ot the work position, said needles having their relatively abutting;- sides provided with flat contacting surlaees, and a tightening serew on the said collet adapted to'be serewml` up against an outside needletor securely holding' the said needles in position within the collet.

In testimony whereof I aflix my signature.`

JOI-IN J. DONOVAN; 

